![]() rDNS is also one of the basic requirements for running some Internet protocols. Reverse DNS prevents you from encountering problems with most enterprise management systems, r-commands, SMTP servers, or network backup systems. Tracking website visitors is beneficial for B2B lead generation. IP addresses of website visitors remain in the visit logs and can help you get an idea of your website audience. Reverse DNS helps provide human-readable data in analytics, rather than listing logs of IP addresses. However, rDNS is mainly used as an additional layer of protection because it isn't reliable as some legitimate mail servers don't have properly set up rDNS records. Most email servers use rDNS to block spam mail, rejecting messages from IP addresses without rDNS. Besides mail servers, there are several reasons for using rDNS: Reverse DNS is particularly useful for those running an outgoing mail server. Note: Learn more about PTR Record and other record types by referring to our article DNS Record Types Explained.
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